Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	6061 Aluminum Alloy
Color	Silver
Motor Shaft Diameter	5mm
Driven Shaft Diameter	3mm
Outer Diameter	12mm
Total Length	25mm
Weight	8.5 grams
Surface Finish	Anodized
Fixing Method	Dual Set Screws
Compatibility	RC Boats, Cars, Aircraft

5 reviews

Anonymous

Apr 16, 2026

Rating: 5/5

Great Value

Much cheaper than local hobby shop and same quality.

Anonymous

Apr 04, 2026

Rating: 4/5

Good Adapter

Works well but set screws were a bit tight to thread initially.

Anonymous

Mar 14, 2026

Rating: 5/5

Excellent Precision

Machining is top notch. Fits my motor shaft perfectly without wobble.

Anonymous

Feb 16, 2026

Rating: 5/5

Perfect Step Down

Exactly what I needed to connect my 5mm motor to 3mm prop shaft.

Anonymous

Feb 01, 2026

Rating: 5/5

Strong Material

Feels very solid. No flex under load during high speed runs.

5 FAQ

Q: Does this come with screws?

A: Yes, set screws are included in the package.

Q: Can I use this for a 4mm shaft?

A: No, this model is specifically for 5mm to 3mm adaptation.

Q: Is this flexible or rigid?

A: This is a rigid coupling designed for fixed alignment.

Q: Do I need glue?

A: No, the set screws provide sufficient holding force for most applications.

Q: What is the max RPM?

A: It is rated for standard RC motor speeds up to 30000 RPM.

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